import React, { useEffect, useMemo, useRef, useState } from 'react';
import {
  AlertCircle,
  Bot,
  CheckCircle,
  ChevronDown,
  Cloud,
  Database,
  Download,
  Eye,
  Grid3X3,
  HelpCircle,
  History,
  Layers3,
  MessageSquare,
  PanelLeftClose,
  PanelLeftOpen,
  Play,
  Plus,
  Send,
  Settings,
  Share2,
  Sparkles,
  Table2,
  Terminal,
  Trash2,
  Upload,
  UserCircle,
  Workflow,
  X,
  Zap,
} from 'lucide-react';
import { motion, AnimatePresence } from 'motion/react';
import { useLocation } from 'react-router-dom';
import ModuleSwitcher from '../components/ModuleSwitcher';
import { useLanguage } from '../context/LanguageContext';
import {
  buildRuntimeConfig,
  createDefaultWorkflow,
  ensureValidationChecklist,
  getBehaviorSectionsForNode,
  getInputOutputsForEdge,
  getInputOutputsForNode,
  getNodeConnectionAnchor,
  getNodeStatusFromValidation,
  getParametersForNode,
  getValidationsForNode,
  InitialSpaceType,
  WorkflowEdge,
  WorkflowModel,
  WorkflowNode,
  WorkflowNodeKind,
  WorkflowNodeStatus,
  WorkflowPortType,
} from '../workflowModel';

const kindStyles: Record<WorkflowNodeKind, { label: string; accent: string; bg: string; icon: React.ElementType }> = {
  environment: { label: 'ENVIRONMENT', accent: 'text-slate-600', bg: 'bg-slate-50 border-slate-200', icon: Layers3 },
  space: { label: 'SPACE', accent: 'text-emerald-600', bg: 'bg-emerald-50 border-emerald-100', icon: Grid3X3 },
  agent: { label: 'AGENT', accent: 'text-blue-600', bg: 'bg-blue-50 border-blue-100', icon: Bot },
  behavior: { label: 'BEHAVIOR', accent: 'text-amber-600', bg: 'bg-amber-50 border-amber-100', icon: Workflow },
  output: { label: 'OUTPUT', accent: 'text-slate-600', bg: 'bg-slate-50 border-slate-200', icon: Database },
};

const portColors: Record<WorkflowPortType, string> = {
  ENV_CONTEXT: '#64748b',
  SPACE_CONTEXT: '#10b981',
  AGENT_CONTEXT: '#2563eb',
  OBSERVABLE_INFO: '#f59e0b',
  BEHAVIOR_OUTPUT: '#e11d48',
  REPORT: '#64748b',
};

interface WorkflowCardProps {
  node: WorkflowNode;
  status: WorkflowNodeStatus;
  selected: boolean;
  onSelect: (id: string) => void;
  onDragStart: (id: string, event: React.MouseEvent<HTMLButtonElement>) => void;
  onDelete: (id: string, event: React.MouseEvent<HTMLButtonElement>) => void;
}

const WorkflowCard: React.FC<WorkflowCardProps> = ({
  node,
  status,
  selected,
  onSelect,
  onDragStart,
  onDelete,
}) => {
  const style = kindStyles[node.kind];
  const Icon = style.icon;
  const statusFrame =
    status === 'error'
      ? 'border-red-300 shadow-red-100'
      : status === 'warning'
        ? 'border-amber-300 shadow-amber-100'
        : 'border-slate-200';
  const statusHeader =
    status === 'error'
      ? 'bg-red-50 border-red-100'
      : status === 'warning'
        ? 'bg-amber-50 border-amber-100'
        : style.bg;

  return (
    <button
      onClick={(event) => {
        event.stopPropagation();
        onSelect(node.id);
      }}
      onMouseDown={(event) => onDragStart(node.id, event)}
      className={`absolute w-44 h-32 text-left rounded-lg border bg-white shadow-sm transition-shadow cursor-move ${
        selected ? 'ring-4 ring-blue-500/15 border-blue-400 shadow-xl' : `${statusFrame} hover:border-blue-200 hover:shadow-md`
      }`}
      style={{ left: `calc(50% + ${node.x}px)`, top: `calc(50% + ${node.y}px)` }}
    >
      <div className={`flex items-center justify-between px-3 py-2 border-b ${statusHeader}`}>
        <div className="flex items-center gap-2">
          <span className={`p-1.5 rounded-md bg-white border ${style.accent}`}>
            <Icon className="w-4 h-4" />
          </span>
          <span className={`text-[10px] font-black tracking-[0.18em] ${style.accent}`}>{style.label}</span>
        </div>
        <span
          className={`text-[9px] font-black uppercase px-2 py-0.5 rounded-full border ${
            status === 'error'
              ? 'bg-red-50 text-red-600 border-red-100'
              : status === 'warning'
                ? 'bg-amber-50 text-amber-600 border-amber-100'
                : status === 'success'
                  ? 'bg-emerald-50 text-emerald-600 border-emerald-100'
                  : 'bg-slate-50 text-slate-500 border-slate-200'
          }`}
        >
          {status}
        </span>
      </div>
      <button
        onMouseDown={(event) => event.stopPropagation()}
        onClick={(event) => onDelete(node.id, event)}
        className="absolute -right-2 -top-2 w-6 h-6 rounded-full bg-white border border-slate-200 shadow-sm text-slate-400 hover:text-red-600 hover:border-red-200 flex items-center justify-center"
        title="Delete subject"
      >
        <Trash2 className="w-3.5 h-3.5" />
      </button>
      <span className="absolute -left-1.5 top-1/2 -translate-y-1/2 w-3 h-3 rounded-full bg-white border-2 border-slate-300" />
      <span className="absolute -right-1.5 top-1/2 -translate-y-1/2 w-3 h-3 rounded-full bg-white border-2 border-slate-300" />
      <div className="p-3">
        <div>
          <h3 className="text-sm font-black text-slate-900">{node.title}</h3>
          <p className="text-[11px] text-slate-500 mt-1 leading-snug line-clamp-2">{node.subtitle}</p>
        </div>
      </div>
    </button>
  );
};

const OmniEditor: React.FC = () => {
  const { t, language } = useLanguage();
  const location = useLocation();
  const initialWorkflow = useMemo(() => createDefaultWorkflow(), []);
  const canvasRef = useRef<HTMLDivElement>(null);
  const [workflow, setWorkflow] = useState<WorkflowModel>(initialWorkflow);
  const [isAssistantCollapsed, setIsAssistantCollapsed] = useState(true);
  const [selectedNodeId, setSelectedNodeId] = useState('example-agent');
  const [selectedEdgeId, setSelectedEdgeId] = useState<string | null>(null);
  const [selectedVariableName, setSelectedVariableName] = useState<string | null>(null);
  const [linkingFrom, setLinkingFrom] = useState<string | null>(null);
  const [dragState, setDragState] = useState<{ id: string; startX: number; startY: number; nodeX: number; nodeY: number } | null>(null);
  const [bottomTab, setBottomTab] = useState<'agents' | 'variables' | 'sensing' | 'internalModels' | 'schedule' | 'data' | 'io' | 'validation'>('variables');
  const [isDetailOpen, setIsDetailOpen] = useState(false);
  const [showInitModal, setShowInitModal] = useState(!!location.state?.fromLanding);
  const [selectedSpaceType, setSelectedSpaceType] = useState<InitialSpaceType>('grid');
  const [canvasSize, setCanvasSize] = useState({ width: 0, height: 0 });
  const [messages, setMessages] = useState([
    {
      role: 'assistant',
      content:
        language === 'en'
          ? 'I can turn model ideas into a reproducible data-flow: source data, validation, parameter tables, ABM/game model, simulation, analysis and report output.'
          : '我可以辅助你创建环境、空间、Agent、属性和行为，但当前阶段先把右侧图形化建模功能做扎实。',
    },
  ]);
  const [input, setInput] = useState('');
  const [showToast, setShowToast] = useState<string | null>(null);

  useEffect(() => {
    const element = canvasRef.current;
    if (!element) return;

    const updateSize = () => {
      setCanvasSize({ width: element.clientWidth, height: element.clientHeight });
    };

    updateSize();
    const observer = new ResizeObserver(updateSize);
    observer.observe(element);
    return () => observer.disconnect();
  }, []);

  const selectedNode = workflow.nodes.find((node) => node.id === selectedNodeId) ?? workflow.nodes[0];
  const selectedNodeStatus = getNodeStatusFromValidation(workflow, selectedNode.id);
  const selectedNodeValidations = getValidationsForNode(workflow, selectedNode.id);
  const selectedNodeValidationIds = new Set(selectedNodeValidations.map((validation) => validation.id));
  const selectedEdge = workflow.edges.find((edge) => edge.id === selectedEdgeId) ?? null;
  const selectedEdgeContracts = selectedEdge ? getInputOutputsForEdge(workflow, selectedEdge.id) : [];
  const selectedNodeContracts = getInputOutputsForNode(workflow, selectedNode.id);
  const selectedNodeInputContracts = selectedNodeContracts.filter((contract) => contract.direction === 'input');
  const selectedNodeOutputContracts = selectedNodeContracts.filter((contract) => contract.direction === 'output');
  const contextContracts = selectedEdge ? selectedEdgeContracts : selectedNodeContracts;
  const contextContractIds = new Set(contextContracts.map((contract) => contract.id));
  const ioContextLabel = selectedEdge ? selectedEdge.label : selectedNode.title;
  const selectedParameters = getParametersForNode(workflow, selectedNode.id);
  const selectedBehaviorSections = getBehaviorSectionsForNode(
    workflow,
    selectedNode.kind === 'agent' ? 'on-sensing' : selectedNode.id,
  );
  const sensingSections = selectedBehaviorSections.filter((section) => section.kind === 'observable_pool');
  const internalModelSections = selectedBehaviorSections.filter((section) => section.kind !== 'observable_pool');
  const scheduleRows = workflow.schedules;
  const associatedDataRows = workflow.associatedData;
  const ioRows = workflow.inputOutputs;
  const validationRows = workflow.validations;
  const getAssociatedDataForVariable = (variableName: string) => (
    associatedDataRows.find((row) => row.relatedVariable === variableName)
  );
  const selectedVariable = (selectedParameters.length ? selectedParameters : workflow.parameters).find(
    (parameter) => parameter.name === selectedVariableName,
  );
  const selectedVariableData = selectedVariable ? getAssociatedDataForVariable(selectedVariable.name) : null;

  const edgeLines = workflow.edges
    .map((edge) => {
      const source = workflow.nodes.find((node) => node.id === edge.source);
      const target = workflow.nodes.find((node) => node.id === edge.target);
      if (!source || !target) return null;
      const sourceSide = source.x <= target.x ? 'right' : 'left';
      const targetSide = source.x <= target.x ? 'left' : 'right';
      const sourceAnchor = getNodeConnectionAnchor({ x: source.x, y: source.y, side: sourceSide });
      const targetAnchor = getNodeConnectionAnchor({ x: target.x, y: target.y, side: targetSide });
      return {
        ...edge,
        x1: canvasSize.width / 2 + sourceAnchor.x,
        y1: canvasSize.height / 2 + sourceAnchor.y,
        x2: canvasSize.width / 2 + targetAnchor.x,
        y2: canvasSize.height / 2 + targetAnchor.y,
      };
    })
    .filter(Boolean);

  const handleAction = (label: string) => {
    setShowToast(label);
    setTimeout(() => setShowToast(null), 2500);
  };

  const handleExportRuntimeConfig = () => {
    const runtimeConfig = buildRuntimeConfig(workflow);
    const json = JSON.stringify(runtimeConfig, null, 2);
    const blob = new Blob([json], { type: 'application/json' });
    const url = URL.createObjectURL(blob);
    const anchor = document.createElement('a');
    anchor.href = url;
    anchor.download = 'abm-runtime-config.json';
    anchor.click();
    URL.revokeObjectURL(url);
    setBottomTab('io');
    handleAction('Export model runtime config JSON generated from I/O contracts');
  };

  const initializeSpace = (spaceType?: InitialSpaceType) => {
    const nextWorkflow = createDefaultWorkflow(spaceType);
    setWorkflow(nextWorkflow);
    setSelectedNodeId(spaceType ? `${spaceType}-space` : 'example-agent');
    setSelectedEdgeId(null);
    setShowInitModal(false);
  };

  const handleNodeMouseDown = (id: string, event: React.MouseEvent<HTMLButtonElement>) => {
    if (event.button !== 0) return;
    const node = workflow.nodes.find((item) => item.id === id);
    if (!node) return;
    setDragState({ id, startX: event.clientX, startY: event.clientY, nodeX: node.x, nodeY: node.y });
  };

  const handleCanvasMouseMove = (event: React.MouseEvent<HTMLDivElement>) => {
    if (!dragState) return;
    const dx = event.clientX - dragState.startX;
    const dy = event.clientY - dragState.startY;
    setWorkflow((current) => ({
      ...current,
      nodes: current.nodes.map((node) => (
        node.id === dragState.id ? { ...node, x: dragState.nodeX + dx, y: dragState.nodeY + dy } : node
      )),
    }));
  };

  const stopDragging = () => setDragState(null);

  const deleteSelectedNode = () => {
    if (!selectedNode) return;
    if (workflow.nodes.length <= 1) return;
    setWorkflow((current) => ({
      ...current,
      nodes: current.nodes.filter((node) => node.id !== selectedNode.id),
      edges: current.edges.filter((edge) => edge.source !== selectedNode.id && edge.target !== selectedNode.id),
      parameters: current.parameters.filter((parameter) => parameter.nodeId !== selectedNode.id),
      behaviorSections: current.behaviorSections.filter((section) => section.nodeId !== selectedNode.id),
    }));
    const remaining = workflow.nodes.filter((node) => node.id !== selectedNode.id);
    setSelectedNodeId(remaining[0]?.id ?? '');
    setSelectedEdgeId(null);
  };

  const deleteNodeById = (id: string, event: React.MouseEvent<HTMLButtonElement>) => {
    event.stopPropagation();
    if (workflow.nodes.length <= 1) return;
    setWorkflow((current) => ({
      ...current,
      nodes: current.nodes.filter((node) => node.id !== id),
      edges: current.edges.filter((edge) => edge.source !== id && edge.target !== id),
      parameters: current.parameters.filter((parameter) => parameter.nodeId !== id),
      behaviorSections: current.behaviorSections.filter((section) => section.nodeId !== id),
    }));
    if (selectedNodeId === id) {
      const remaining = workflow.nodes.filter((node) => node.id !== id);
      setSelectedNodeId(remaining[0]?.id ?? '');
    }
    setSelectedEdgeId(null);
  };

  const deleteSelectedEdge = () => {
    if (!selectedEdgeId) return;
    setWorkflow((current) => ({
      ...current,
      edges: current.edges.filter((edge) => edge.id !== selectedEdgeId),
    }));
    setSelectedEdgeId(null);
  };

  const handleNodeSelect = (id: string) => {
    if (linkingFrom && linkingFrom !== id) {
      const source = workflow.nodes.find((node) => node.id === linkingFrom);
      const target = workflow.nodes.find((node) => node.id === id);
      if (source && target) {
        const exists = workflow.edges.some((edge) => edge.source === source.id && edge.target === target.id);
        if (!exists) {
          const type = source.outputs[0]?.type ?? 'AGENT_CONTEXT';
          const newEdge: WorkflowEdge = {
            id: `edge-${Date.now()}`,
            source: source.id,
            target: target.id,
            type,
            label: `${source.title} -> ${target.title}`,
          };
          setWorkflow((current) => ({ ...current, edges: [...current.edges, newEdge] }));
        }
      }
      setLinkingFrom(null);
    }
    setSelectedNodeId(id);
    setSelectedEdgeId(null);
  };

  const handleSend = () => {
    if (!input.trim()) return;
    const content = input.trim();
    setMessages((prev) => [...prev, { role: 'user', content }]);
    setInput('');
    setWorkflow((current) => ensureValidationChecklist(current));
    setTimeout(() => {
      setMessages((prev) => [
        ...prev,
        {
          role: 'assistant',
          content:
            language === 'en'
              ? 'I mapped that request onto the workflow structure and generated the matching validation checklist.'
              : '我会把这个需求映射到工作流结构，并同步生成对应的 validation checklist。',
        },
      ]);
    }, 500);
  };

  return (
    <div className="bg-white text-slate-900 h-screen flex flex-col overflow-hidden font-sans relative">
      <AnimatePresence>
        {showToast && (
          <motion.div
            initial={{ opacity: 0, y: 40, x: '-50%' }}
            animate={{ opacity: 1, y: 0, x: '-50%' }}
            exit={{ opacity: 0, y: 40, x: '-50%' }}
            className="fixed bottom-8 left-1/2 z-[100] bg-white text-slate-900 px-5 py-3 rounded-lg shadow-2xl border border-slate-200 flex items-center gap-3"
          >
            <span className="w-2 h-2 bg-blue-500 rounded-full animate-pulse" />
            <span className="text-sm font-bold">"{showToast}" {t('coming_soon')}</span>
          </motion.div>
        )}
      </AnimatePresence>

      <AnimatePresence>
        {showInitModal && (
          <div className="fixed inset-0 z-[200] flex items-center justify-center p-4">
            <motion.div
              initial={{ opacity: 0 }}
              animate={{ opacity: 1 }}
              exit={{ opacity: 0 }}
              className="absolute inset-0 bg-white/70 backdrop-blur-md"
              onClick={() => setShowInitModal(false)}
            />
            <motion.div
              initial={{ opacity: 0, scale: 0.95, y: 16 }}
              animate={{ opacity: 1, scale: 1, y: 0 }}
              exit={{ opacity: 0, scale: 0.95, y: 16 }}
              className="relative w-full max-w-3xl bg-white border border-slate-200 rounded-lg shadow-2xl overflow-hidden"
            >
              <div className="p-6 border-b border-slate-100">
                <h2 className="text-2xl font-black text-slate-900">{t('env_modal_title')}</h2>
                <p className="text-slate-500 text-sm mt-2">
                  {language === 'en'
                    ? 'Choose the spatial subject you need now. You can skip this step and add space later.'
                    : '选择当前需要的空间主体。你也可以先跳过，之后再添加。'}
                </p>
              </div>
              <div className="p-6 grid grid-cols-2 gap-4">
                {[
                  { id: 'Grid Space', icon: Grid3X3, desc: t('env_grid_desc') },
                  { id: 'Network Space', icon: Workflow, desc: t('env_network_desc') },
                  { id: 'Continuous Space', icon: Sparkles, desc: t('env_continuous_desc') },
                  { id: 'GIS Space', icon: Database, desc: t('env_gis_desc') },
                ].map((item) => (
                  <button
                    key={item.id}
                    onClick={() => {
                      const normalized = item.id.split(' ')[0].toLowerCase() as InitialSpaceType;
                      setSelectedSpaceType(normalized);
                    }}
                    className={`text-left p-4 rounded-lg border transition-all ${
                      item.id.toLowerCase().startsWith(selectedSpaceType)
                        ? 'border-blue-500 bg-blue-50 ring-4 ring-blue-500/10'
                        : 'border-slate-200 bg-slate-50 hover:bg-white hover:border-blue-300'
                    }`}
                  >
                    <item.icon className="w-6 h-6 text-blue-600 mb-3" />
                    <div className="font-black text-slate-900">{item.id}</div>
                    <p className="text-xs text-slate-500 mt-1 leading-relaxed">{item.desc}</p>
                  </button>
                ))}
              </div>
              <div className="p-6 bg-slate-50 border-t border-slate-100 flex items-center justify-between">
                <button
                  onClick={() => initializeSpace()}
                  className="px-4 py-2 text-sm font-black text-slate-500 hover:text-slate-900 transition-colors"
                >
                  {t('env_skip')}
                </button>
                <button
                  onClick={() => initializeSpace(selectedSpaceType)}
                  className="px-6 py-2.5 bg-blue-600 hover:bg-blue-700 text-white rounded-md text-sm font-black shadow-lg shadow-blue-500/20 transition-all"
                >
                  {t('env_confirm')}
                </button>
              </div>
            </motion.div>
          </div>
        )}
      </AnimatePresence>

      <header className="h-12 bg-slate-950 border-b border-slate-800 text-slate-200 flex items-center justify-between px-2 z-50 shrink-0 shadow-sm">
        <div className="flex items-center gap-2 h-full">
          <ModuleSwitcher variant="dark" />

          <button
            onClick={() => handleAction('Workspace')}
            className="h-8 flex items-center gap-1.5 px-2 rounded-md hover:bg-slate-800 text-xs font-semibold transition-colors"
          >
            Personal <ChevronDown className="w-3.5 h-3.5 text-slate-400" />
          </button>

          <button
            onClick={() => handleAction('GWproduce')}
            className="h-8 flex items-center gap-2 px-3 rounded-md bg-slate-800 hover:bg-slate-700 border border-slate-700 min-w-40 text-left transition-colors"
          >
            <Cloud className="w-3.5 h-3.5 text-emerald-400" />
            <span className="text-sm font-semibold text-slate-100">GWproduce</span>
          </button>

          <button
            onClick={() => setIsAssistantCollapsed((collapsed) => !collapsed)}
            className="h-8 flex items-center gap-2 px-3 rounded-md bg-slate-800 hover:bg-slate-700 border border-slate-700 text-xs font-semibold transition-colors"
          >
            <Sparkles className="w-3.5 h-3.5 text-slate-100" />
            AI
            <span className={`w-8 h-4 rounded-full p-0.5 flex transition-colors ${isAssistantCollapsed ? 'bg-slate-600 justify-start' : 'bg-blue-600 justify-end'}`}>
              <span className="w-3 h-3 rounded-full bg-white shadow-sm" />
            </span>
          </button>

          {[
            ['Share', Share2],
            ['History', History],
            ['Import', Upload],
            ['Export', Download],
          ].map(([label, Icon]) => {
            const actionLabel = label as string;
            return (
            <button
              key={actionLabel}
              onClick={() => {
                if (actionLabel === 'Export') {
                  handleExportRuntimeConfig();
                  return;
                }
                handleAction(actionLabel === 'Import' ? 'Import Excel will create Associated Data records' : actionLabel);
              }}
              className="h-8 flex items-center gap-2 px-3 rounded-md bg-slate-800 hover:bg-slate-700 border border-slate-700 text-xs font-semibold transition-colors"
            >
              <Icon className="w-3.5 h-3.5" />
              {actionLabel}
              {actionLabel === 'Import' || actionLabel === 'Export' ? <ChevronDown className="w-3.5 h-3.5 text-slate-400" /> : null}
            </button>
            );
          })}
        </div>

        <div className="flex items-center gap-2">
          <button
            onClick={() => handleAction('Upgrade')}
            className="h-8 px-3 rounded-md bg-blue-600 hover:bg-blue-500 text-white text-xs font-black transition-colors"
          >
            Upgrade <ChevronDown className="inline w-3.5 h-3.5 ml-1" />
          </button>
          <button
            onClick={() => handleAction('Help')}
            className="h-8 flex items-center gap-2 px-3 rounded-md bg-slate-800 hover:bg-slate-700 border border-slate-700 text-xs font-semibold transition-colors"
          >
            <HelpCircle className="w-3.5 h-3.5" /> Help <ChevronDown className="w-3.5 h-3.5 text-slate-400" />
          </button>
          <button
            onClick={() => handleAction('Profile')}
            className="h-8 w-8 rounded-full bg-slate-800 border border-slate-700 flex items-center justify-center text-emerald-300 hover:bg-slate-700 transition-colors"
          >
            <UserCircle className="w-5 h-5" />
          </button>
        </div>
      </header>

      <div className="flex flex-1 overflow-hidden">
        <section
          style={{ flex: `0 0 ${isAssistantCollapsed ? 48 : 340}px`, width: isAssistantCollapsed ? 48 : 340 }}
          className="flex flex-col border-r border-slate-200 bg-slate-50 relative overflow-hidden"
        >
          <header className="p-3 border-b border-slate-200 bg-white flex justify-between items-center min-h-[56px]">
            {!isAssistantCollapsed && (
              <span className="text-[10px] font-black uppercase tracking-[0.2em] text-slate-400 flex items-center gap-2">
                <Bot className="w-4 h-4 text-blue-600" /> {t('ai_assistant')}
              </span>
            )}
            <button
              onClick={() => setIsAssistantCollapsed(!isAssistantCollapsed)}
              className="p-1.5 hover:bg-slate-100 rounded-md text-slate-400 transition-colors"
            >
              {isAssistantCollapsed ? <PanelLeftOpen className="w-4 h-4" /> : <PanelLeftClose className="w-4 h-4" />}
            </button>
          </header>

          {!isAssistantCollapsed && (
            <>
              <div className="flex-1 overflow-y-auto p-4 space-y-5 text-sm">
                <div className="p-3 rounded-lg bg-blue-50 border border-blue-100 text-blue-800">
                  <div className="text-[10px] font-black uppercase tracking-widest mb-2">Design Assistant</div>
                  <p className="text-xs leading-relaxed">
                    {language === 'en'
                      ? 'Collapsed by default for now: the visual model editor is the main workspace.'
                      : '当前默认收起 AI：先把右侧图形化模型编辑器作为主工作区。'}
                  </p>
                </div>
                <div className="p-3 rounded-lg bg-white border border-slate-200 shadow-sm">
                  <div className="text-[10px] font-black uppercase tracking-widest text-slate-400 mb-3">Pipeline Nodes</div>
                  <div className="grid grid-cols-2 gap-2">
                    {[
                      ['Data Source', Database, 'Excel / raw data entry'],
                      ['Parameter Table', Table2, 'Model-ready parameters'],
                      ['Validation', CheckCircle, 'Rules and checks'],
                      ['Model Output', Layers3, 'Simulation outputs'],
                    ].map(([label, Icon, desc]) => (
                      <button
                        key={label as string}
                        onClick={() => handleAction(label as string)}
                        className="text-left p-3 rounded-lg border border-slate-200 bg-slate-50 hover:bg-white hover:border-blue-200 transition-all"
                        title={desc as string}
                      >
                        <Icon className="w-4 h-4 text-blue-600 mb-2" />
                        <div className="text-[11px] font-black text-slate-800">{label as string}</div>
                        <div className="text-[10px] text-slate-400 mt-1 leading-snug">{desc as string}</div>
                      </button>
                    ))}
                  </div>
                </div>
                {messages.map((msg, index) => (
                  <div key={`${msg.role}-${index}`} className={`flex flex-col gap-1 ${msg.role === 'user' ? 'items-end' : ''}`}>
                    <span className="text-[10px] text-slate-400 font-black uppercase tracking-wider">
                      {msg.role === 'user' ? t('user') : t('ai_researcher')}
                    </span>
                    <div
                      className={`p-3 border shadow-sm ${
                        msg.role === 'assistant'
                          ? 'bg-white border-slate-200 text-slate-600 rounded-lg rounded-tl-none'
                          : 'bg-blue-600 text-white border-blue-500 rounded-lg rounded-tr-none'
                      }`}
                    >
                      {msg.content}
                    </div>
                  </div>
                ))}
              </div>
              <div className="p-4 border-t border-slate-200 bg-white">
                <div className="relative">
                  <textarea
                    className="w-full bg-slate-50 border border-slate-200 rounded-lg p-4 pr-14 text-sm text-slate-700 focus:ring-4 focus:ring-blue-500/10 focus:border-blue-500 outline-none resize-none transition-all shadow-inner"
                    rows={2}
                    value={input}
                    onChange={(event) => setInput(event.target.value)}
                    placeholder={
                      language === 'en'
                        ? "Describe a model edit, e.g. 'add a grid space and an agent behavior'"
                        : "描述模型修改，例如“添加网格空间和一个 agent 行为”"
                    }
                  />
                  <button
                    onClick={handleSend}
                    className="absolute bottom-3 right-3 p-2.5 bg-blue-600 rounded-md text-white shadow-lg shadow-blue-500/30 hover:bg-blue-700 transition-all active:scale-95"
                  >
                    <Send className="w-4 h-4" />
                  </button>
                </div>
              </div>
            </>
          )}
        </section>

        <main className="flex-1 flex flex-col overflow-hidden">
          <section className="flex-1 flex overflow-hidden">
            <div className="flex-1 flex flex-col relative bg-white overflow-hidden">
              <header className="p-3 border-b border-slate-200 bg-white/90 backdrop-blur-md flex justify-between items-center z-10">
                <div className="flex items-center gap-2">
                  <span className="p-1.5 bg-blue-50 text-blue-600 rounded-md border border-blue-100">
                    <Workflow className="w-4 h-4" />
                  </span>
                  <div>
                    <span className="block text-[10px] font-black uppercase tracking-[0.2em] text-slate-500">Model Subjects</span>
                    <span className="block text-[10px] text-slate-400">Environment, space, agents, observation and behaviors</span>
                  </div>
                </div>
                <div className="flex items-center gap-2">
                  <button
                    onClick={() => setSelectedNodeId('grid-space')}
                    className="px-3 py-1.5 bg-white hover:bg-slate-50 text-emerald-600 text-[10px] font-black rounded-md border border-slate-200 shadow-sm transition-all uppercase flex items-center gap-2"
                  >
                    <Plus className="w-3.5 h-3.5" /> Grid Space
                  </button>
                  <button
                    onClick={() => setSelectedNodeId('example-agent')}
                    className="px-3 py-1.5 bg-white hover:bg-slate-50 text-indigo-600 text-[10px] font-black rounded-md border border-slate-200 shadow-sm transition-all uppercase flex items-center gap-2"
                  >
                    <Plus className="w-3.5 h-3.5" /> Agent Subject
                  </button>
                </div>
              </header>

              <div
                ref={canvasRef}
                className="flex-1 relative overflow-hidden bg-[#fbfcfe]"
                style={{
                  backgroundImage:
                    'linear-gradient(rgba(15,23,42,0.035) 1px, transparent 1px), linear-gradient(90deg, rgba(15,23,42,0.035) 1px, transparent 1px)',
                  backgroundSize: '32px 32px',
                }}
                onClick={() => {
                  setSelectedNodeId('example-agent');
                  setSelectedEdgeId(null);
                  setLinkingFrom(null);
                }}
                onMouseMove={handleCanvasMouseMove}
                onMouseUp={stopDragging}
                onMouseLeave={stopDragging}
              >
                <svg className="absolute inset-0 w-full h-full pointer-events-none">
                  {edgeLines.map((edge) => {
                    const curveOffset = Math.max(80, Math.min(180, Math.abs(edge!.x2 - edge!.x1) / 2));
                    const c1 = edge!.x1 <= edge!.x2 ? edge!.x1 + curveOffset : edge!.x1 - curveOffset;
                    const c2 = edge!.x1 <= edge!.x2 ? edge!.x2 - curveOffset : edge!.x2 + curveOffset;
                    return (
                      <g key={edge!.id}>
                        <path
                          className="pointer-events-auto cursor-pointer"
                          d={`M ${edge!.x1} ${edge!.y1} C ${c1} ${edge!.y1}, ${c2} ${edge!.y2}, ${edge!.x2} ${edge!.y2}`}
                          fill="none"
                          stroke={portColors[edge!.type]}
                          strokeWidth={selectedEdgeId === edge!.id ? '6' : '3'}
                          strokeLinecap="round"
                          opacity="0.78"
                          onClick={(event) => {
                            event.stopPropagation();
                            setSelectedEdgeId(edge!.id);
                          }}
                        />
                        <circle cx={edge!.x1} cy={edge!.y1} r="4" fill="white" stroke={portColors[edge!.type]} strokeWidth="3" />
                        <circle cx={edge!.x2} cy={edge!.y2} r="4" fill={portColors[edge!.type]} />
                      </g>
                    );
                  })}
                </svg>
                {workflow.nodes.map((node) => (
                  <WorkflowCard
                    key={node.id}
                    node={node}
                    status={getNodeStatusFromValidation(workflow, node.id)}
                    selected={selectedNode.id === node.id}
                    onSelect={handleNodeSelect}
                    onDragStart={handleNodeMouseDown}
                    onDelete={deleteNodeById}
                  />
                ))}
              </div>
            </div>

            <aside className="w-[520px] bg-white border-l border-slate-200 flex flex-col">
              <header className="p-4 border-b border-slate-100 bg-slate-50/70 flex items-center justify-between">
                <div className="flex items-center gap-2">
                  <Settings className="w-4 h-4 text-slate-400" />
                  <span className="text-[10px] font-black uppercase tracking-[0.2em] text-slate-400">Node Inspector</span>
                </div>
                <button className="p-1.5 hover:bg-slate-100 rounded-md text-slate-400" onClick={() => handleAction('Close inspector')}>
                  <X className="w-4 h-4" />
                </button>
              </header>

              <div className="flex-1 overflow-y-auto p-4 space-y-5">
                {selectedEdge && (
                  <section className="space-y-3">
                    <div className="flex items-start justify-between gap-3">
                      <div>
                        <div className="text-[10px] font-black uppercase tracking-widest text-amber-600">Connection</div>
                        <h2 className="text-lg font-black text-slate-900 mt-1">{selectedEdge.label}</h2>
                        <p className="text-xs text-slate-500 mt-1">{selectedEdge.type}</p>
                      </div>
                      <button
                        onClick={deleteSelectedEdge}
                        className="px-3 py-1.5 bg-red-50 hover:bg-red-100 text-red-600 rounded-md text-[10px] font-black uppercase"
                      >
                        Delete
                      </button>
                    </div>

                    <div className="rounded-lg border border-slate-200 bg-slate-50/80 p-3 space-y-3">
                      <div className="flex items-center justify-between gap-3">
                        <div>
                          <div className="text-[10px] font-black uppercase tracking-[0.18em] text-slate-400">I/O Contract</div>
                          <p className="text-xs text-slate-500 mt-1">This connection is backed by model input/output rows.</p>
                        </div>
                        <span className="text-[10px] font-black text-slate-500 bg-white border border-slate-200 rounded-full px-2 py-1">
                          {selectedEdgeContracts.length} rows
                        </span>
                      </div>

                      {selectedEdgeContracts.length > 0 ? (
                        <div className="space-y-2">
                          {selectedEdgeContracts.map((contract) => (
                            <div key={contract.id} className="rounded-md border border-white bg-white p-3 shadow-sm">
                              <div className="flex items-start justify-between gap-3">
                                <div>
                                  <div className="font-mono text-sm font-black text-blue-600">{contract.ioName}</div>
                                  <div className="text-[11px] text-slate-500 mt-1">
                                    {contract.sourceComponent} {'->'} {contract.targetComponent}
                                  </div>
                                </div>
                                <span className={`shrink-0 rounded-full px-2 py-1 text-[9px] font-black uppercase ${
                                  contract.direction === 'input'
                                    ? 'bg-emerald-50 text-emerald-700'
                                    : 'bg-blue-50 text-blue-700'
                                }`}>
                                  {contract.direction}
                                </span>
                              </div>
                              <div className="grid grid-cols-2 gap-2 mt-3 text-[11px] text-slate-500">
                                <div>
                                  <span className="block text-[9px] font-black uppercase tracking-widest text-slate-400">Schema</span>
                                  <span className="font-mono text-slate-700">{contract.schema}</span>
                                </div>
                                <div>
                                  <span className="block text-[9px] font-black uppercase tracking-widest text-slate-400">Snapshot</span>
                                  <span className="font-mono text-slate-700">{contract.snapshotPolicy}</span>
                                </div>
                              </div>
                            </div>
                          ))}
                        </div>
                      ) : (
                        <div className="rounded-md border border-dashed border-slate-300 bg-white px-3 py-4 text-xs text-slate-500">
                          No I/O contract has been bound to this connection yet.
                        </div>
                      )}
                    </div>
                  </section>
                )}

                {!selectedEdge && (
                <>
                <div>
                  <div className="flex items-start justify-between gap-4">
                    <div>
                      <div className="text-[10px] font-black uppercase tracking-widest text-blue-600">{kindStyles[selectedNode.kind].label}</div>
                      <h2 className="text-xl font-black text-slate-900 mt-1">{selectedNode.title}</h2>
                      <p className="text-xs text-slate-500 mt-1 leading-relaxed">{selectedNode.subtitle}</p>
                    </div>
                    <span
                      className={`shrink-0 text-[9px] font-black uppercase px-2 py-1 rounded-full border ${
                        selectedNodeStatus === 'error'
                          ? 'bg-red-50 text-red-600 border-red-100'
                          : selectedNodeStatus === 'warning'
                            ? 'bg-amber-50 text-amber-600 border-amber-100'
                            : selectedNodeStatus === 'success'
                              ? 'bg-emerald-50 text-emerald-600 border-emerald-100'
                              : 'bg-slate-50 text-slate-500 border-slate-200'
                      }`}
                    >
                      {selectedNodeStatus}
                    </span>
                  </div>
                </div>

                {selectedVariable && (
                  <section className="p-3 rounded-lg border border-blue-100 bg-blue-50/70 space-y-3">
                    <div className="flex items-start justify-between gap-3">
                      <div>
                        <div className="text-[10px] font-black uppercase tracking-widest text-blue-600">Selected Variable</div>
                        <h3 className="text-sm font-black text-slate-900 font-mono mt-1">{selectedVariable.name}</h3>
                        <p className="text-[11px] text-slate-500 mt-1 leading-relaxed">{selectedVariable.description}</p>
                      </div>
                      <span className={`shrink-0 px-2 py-1 rounded-full text-[10px] font-black uppercase ${
                        selectedVariableData?.qualityStatus === 'error'
                          ? 'bg-red-100 text-red-700'
                          : selectedVariableData
                            ? 'bg-emerald-100 text-emerald-700'
                            : 'bg-slate-100 text-slate-500'
                      }`}>
                        {selectedVariableData?.qualityStatus ?? 'unlinked'}
                      </span>
                    </div>
                    <div className="grid grid-cols-2 gap-2">
                      {[
                        ['Associated Data', selectedVariableData?.id ?? '-'],
                        ['Source Table', selectedVariableData?.sourceTable ?? '-'],
                        ['Source Column', selectedVariableData?.sourceColumn ?? '-'],
                        ['Version Key', selectedVariableData?.versionKey ?? '-'],
                        ['Used By', selectedVariableData?.usedByBehavior ?? '-'],
                        ['Update', selectedVariableData?.updateFrequency ?? '-'],
                      ].map(([label, value]) => (
                        <div key={label} className="p-2 rounded-md bg-white border border-blue-100">
                          <div className="text-[9px] font-black uppercase tracking-widest text-slate-400">{label}</div>
                          <div className="text-[11px] font-black text-slate-700 mt-1 break-words">{value}</div>
                        </div>
                      ))}
                    </div>
                  </section>
                )}

                <section className="p-3 rounded-lg border border-slate-200 bg-white space-y-3">
                  <div className="flex items-center justify-between gap-3">
                    <div>
                      <div className="text-[10px] font-black uppercase tracking-widest text-slate-400">Validation Checklist</div>
                      <p className="text-[11px] text-slate-500 mt-1">Checks related to the current node.</p>
                    </div>
                    <span className={`shrink-0 rounded-full px-2 py-1 text-[10px] font-black uppercase ${
                      selectedNodeStatus === 'error'
                        ? 'bg-red-100 text-red-700'
                        : selectedNodeStatus === 'warning'
                          ? 'bg-amber-100 text-amber-700'
                          : 'bg-emerald-100 text-emerald-700'
                    }`}>
                      {selectedNodeValidations.length} checks
                    </span>
                  </div>

                  {selectedNodeValidations.length > 0 ? (
                    <div className="space-y-2">
                      {selectedNodeValidations.map((validation) => (
                        <div
                          key={validation.id}
                          className={`rounded-md border p-2 ${
                            validation.status === 'error'
                              ? 'border-red-100 bg-red-50/70'
                              : validation.status === 'warning'
                                ? 'border-amber-100 bg-amber-50/70'
                                : 'border-emerald-100 bg-emerald-50/70'
                          }`}
                        >
                          <div className="flex items-start justify-between gap-2">
                            <div>
                              <div className="font-mono text-[11px] font-black text-slate-800">{validation.targetName}</div>
                              <div className="mt-1 text-[10px] text-slate-500">{validation.method} · {validation.metric}</div>
                            </div>
                            <span className={`shrink-0 rounded-full px-2 py-0.5 text-[9px] font-black uppercase ${
                              validation.status === 'error'
                                ? 'bg-red-100 text-red-700'
                                : validation.status === 'warning'
                                  ? 'bg-amber-100 text-amber-700'
                                  : 'bg-emerald-100 text-emerald-700'
                            }`}>
                              {validation.status}
                            </span>
                          </div>
                          <p className="mt-2 text-[10px] leading-relaxed text-slate-500">{validation.notes}</p>
                        </div>
                      ))}
                    </div>
                  ) : (
                    <div className="rounded-md border border-dashed border-slate-200 bg-slate-50 px-3 py-4 text-xs text-slate-500">
                      No validation checks are linked to this node yet.
                    </div>
                  )}
                </section>

                <div className="grid grid-cols-2 gap-3">
                  <div className="p-3 rounded-lg bg-slate-50 border border-slate-200">
                    <div className="flex items-center justify-between gap-2">
                      <div className="text-[10px] font-black text-slate-400 uppercase tracking-widest">Inputs</div>
                      <span className="text-[9px] font-black text-slate-400">{selectedNodeInputContracts.length} contracts</span>
                    </div>
                    <div className="mt-2 space-y-1">
                      {selectedNodeInputContracts.length > 0 ? (
                        selectedNodeInputContracts.map((contract) => (
                          <div key={contract.id} className="rounded-md bg-white border border-slate-100 p-2">
                            <div className="text-[11px] font-black text-slate-800 font-mono">{contract.ioName}</div>
                            <div className="text-[10px] text-slate-500 mt-1">{contract.sourceComponent} {'->'} {contract.targetComponent}</div>
                            <div className="text-[10px] text-slate-400 mt-1 font-mono">{contract.schema}</div>
                          </div>
                        ))
                      ) : (
                        (selectedNode.inputs.length ? selectedNode.inputs : [{ id: 'none', label: 'none', type: 'REPORT' as WorkflowPortType }]).map((port) => (
                          <div key={port.id} className="text-[11px] font-black text-slate-700 flex items-center gap-2">
                            <span className="w-2 h-2 rounded-full" style={{ background: portColors[port.type] }} />
                            {selectedNode.inputs.length ? port.type : 'NONE'}
                          </div>
                        ))
                      )}
                    </div>
                  </div>
                  <div className="p-3 rounded-lg bg-slate-50 border border-slate-200">
                    <div className="flex items-center justify-between gap-2">
                      <div className="text-[10px] font-black text-slate-400 uppercase tracking-widest">Outputs</div>
                      <span className="text-[9px] font-black text-slate-400">{selectedNodeOutputContracts.length} contracts</span>
                    </div>
                    <div className="mt-2 space-y-1">
                      {selectedNodeOutputContracts.length > 0 ? (
                        selectedNodeOutputContracts.map((contract) => (
                          <div key={contract.id} className="rounded-md bg-white border border-slate-100 p-2">
                            <div className="text-[11px] font-black text-slate-800 font-mono">{contract.ioName}</div>
                            <div className="text-[10px] text-slate-500 mt-1">{contract.sourceComponent} {'->'} {contract.targetComponent}</div>
                            <div className="text-[10px] text-slate-400 mt-1 font-mono">{contract.schema}</div>
                          </div>
                        ))
                      ) : (
                        selectedNode.outputs.map((port) => (
                          <div key={port.id} className="text-[11px] font-black text-slate-700 flex items-center gap-2">
                            <span className="w-2 h-2 rounded-full" style={{ background: portColors[port.type] }} />
                            {port.type}
                          </div>
                        ))
                      )}
                    </div>
                  </div>
                </div>

                <section className="space-y-3">
                  <h3 className="text-[10px] font-black text-slate-400 uppercase tracking-widest">Configuration</h3>
                  <div className="flex gap-2">
                    <button
                      onClick={() => setLinkingFrom(selectedNode.id)}
                      className={`px-3 py-1.5 rounded-md text-[10px] font-black uppercase ${
                        linkingFrom === selectedNode.id ? 'bg-blue-600 text-white' : 'bg-blue-50 text-blue-700'
                      }`}
                    >
                      {linkingFrom === selectedNode.id ? 'Select Target' : 'Connect'}
                    </button>
                    <button
                      onClick={deleteSelectedNode}
                      disabled={selectedNode.id === 'environment'}
                      className="px-3 py-1.5 rounded-md text-[10px] font-black uppercase bg-red-50 text-red-600 disabled:opacity-40"
                    >
                      Delete Subject
                    </button>
                  </div>
                  {selectedNode.config.map((item) => (
                    <div key={item.label} className="flex items-center justify-between gap-3 p-3 bg-white border border-slate-200 rounded-lg">
                      <span className="text-xs font-bold text-slate-500">{item.label}</span>
                      <span className="text-xs font-black text-slate-900 text-right">{item.value}</span>
                    </div>
                  ))}
                </section>

                <section className="space-y-3 border-t border-slate-200 pt-4">
                  <div className="flex items-center justify-between gap-3">
                    <h3 className="text-[10px] font-black text-slate-400 uppercase tracking-widest">VISA Model Tables</h3>
                    <span className="text-[10px] font-black text-slate-400 uppercase tracking-widest">{selectedNode.title}</span>
                  </div>

                  <div className="flex flex-wrap gap-2">
                    {[
                      ['agents', Bot, 'Agents'],
                      ['variables', Table2, 'Variables'],
                      ['sensing', Eye, 'Sensing'],
                      ['internalModels', Workflow, 'Internal Models'],
                      ['schedule', Terminal, 'Schedule'],
                      ['data', Database, 'Data'],
                      ['io', Layers3, 'I/O'],
                      ['validation', CheckCircle, 'Validation'],
                    ].map(([id, Icon, label]) => (
                      <button
                        key={id as string}
                        onClick={() => setBottomTab(id as typeof bottomTab)}
                        className={`flex items-center gap-1.5 px-2.5 py-1.5 rounded-md text-[10px] font-black uppercase tracking-wider ${
                          bottomTab === id
                            ? 'bg-blue-50 text-blue-600 border border-blue-200 shadow-sm'
                            : 'bg-slate-50 text-slate-400 border border-slate-200 hover:text-slate-700 hover:bg-white'
                        }`}
                      >
                        <Icon className="w-3.5 h-3.5" /> {label as string}
                      </button>
                    ))}
                  </div>

                  <div className="max-h-[460px] overflow-auto rounded-lg border border-slate-200 bg-white">
                    {bottomTab === 'agents' && (
                      <table className="min-w-[760px] w-full text-left text-xs">
                        <thead className="sticky top-0 bg-white border-b border-slate-200 text-slate-400 uppercase tracking-widest">
                          <tr>
                            <th className="px-4 py-3">Agent / Subject</th>
                            <th className="px-4 py-3">Kind</th>
                            <th className="px-4 py-3">Status</th>
                            <th className="px-4 py-3">Inputs</th>
                            <th className="px-4 py-3">Outputs</th>
                            <th className="px-4 py-3">Description</th>
                          </tr>
                        </thead>
                        <tbody className="divide-y divide-slate-100">
                          {workflow.nodes.map((node) => {
                            const nodeStatus = getNodeStatusFromValidation(workflow, node.id);
                            return (
                            <tr key={node.id} className={selectedNode.id === node.id ? 'bg-blue-50/50' : 'hover:bg-slate-50'}>
                              <td className="px-4 py-3 font-black text-slate-900">{node.title}</td>
                              <td className="px-4 py-3 text-slate-500">{kindStyles[node.kind].label}</td>
                              <td className="px-4 py-3">
                                <span className={`px-2 py-1 rounded-full text-[10px] font-black uppercase ${
                                  nodeStatus === 'error'
                                    ? 'bg-red-100 text-red-700'
                                    : nodeStatus === 'warning'
                                      ? 'bg-amber-100 text-amber-700'
                                      : 'bg-emerald-100 text-emerald-700'
                                }`}>
                                  {nodeStatus}
                                </span>
                              </td>
                              <td className="px-4 py-3 text-slate-500">{node.inputs.map((port) => port.type).join(', ') || 'NONE'}</td>
                              <td className="px-4 py-3 text-slate-500">{node.outputs.map((port) => port.type).join(', ') || 'NONE'}</td>
                              <td className="px-4 py-3 text-slate-500">{node.subtitle}</td>
                            </tr>
                            );
                          })}
                        </tbody>
                      </table>
                    )}

                    {bottomTab === 'variables' && (
                      <table className="min-w-[1180px] w-full text-left text-xs">
                        <thead className="sticky top-0 bg-white border-b border-slate-200 text-slate-400 uppercase tracking-widest">
                          <tr>
                            <th className="px-4 py-3">Variable</th>
                            <th className="px-4 py-3">Type</th>
                            <th className="px-4 py-3">Scope</th>
                            <th className="px-4 py-3">Source</th>
                            <th className="px-4 py-3">Value</th>
                            <th className="px-4 py-3">Status</th>
                            <th className="px-4 py-3">Associated Data</th>
                            <th className="px-4 py-3">Version Key</th>
                            <th className="px-4 py-3">Quality</th>
                            <th className="px-4 py-3">Used By Behavior</th>
                            <th className="px-4 py-3">Description</th>
                          </tr>
                        </thead>
                        <tbody className="divide-y divide-slate-100">
                          {(selectedParameters.length ? selectedParameters : workflow.parameters).map((parameter) => {
                            const associatedData = getAssociatedDataForVariable(parameter.name);
                            return (
                              <tr
                                key={parameter.id}
                                onClick={() => setSelectedVariableName(parameter.name)}
                                className={`cursor-pointer ${
                                  selectedVariableName === parameter.name
                                    ? 'bg-blue-50'
                                    : parameter.status === 'error' || associatedData?.qualityStatus === 'error'
                                      ? 'bg-red-50/40'
                                      : 'hover:bg-slate-50'
                                }`}
                              >
                                <td className="px-4 py-3 font-mono font-black text-blue-700">{parameter.name}</td>
                                <td className="px-4 py-3 text-slate-600">{parameter.type}</td>
                                <td className="px-4 py-3 text-slate-500">{parameter.scope}</td>
                                <td className="px-4 py-3 text-slate-500">{parameter.source}</td>
                                <td className={`px-4 py-3 font-black ${parameter.status === 'error' ? 'text-red-600' : 'text-slate-900'}`}>{parameter.value}</td>
                                <td className="px-4 py-3">
                                  <span className={`px-2 py-1 rounded-full text-[10px] font-black uppercase ${
                                    parameter.status === 'error'
                                      ? 'bg-red-100 text-red-700'
                                      : parameter.status === 'warning'
                                        ? 'bg-amber-100 text-amber-700'
                                        : 'bg-emerald-100 text-emerald-700'
                                  }`}>
                                    {parameter.status}
                                  </span>
                                </td>
                                <td className="px-4 py-3 font-mono text-slate-600">{associatedData?.id ?? '-'}</td>
                                <td className="px-4 py-3 text-slate-500">{associatedData?.versionKey ?? '-'}</td>
                                <td className="px-4 py-3">
                                  {associatedData ? (
                                    <span className={`px-2 py-1 rounded-full text-[10px] font-black uppercase ${associatedData.qualityStatus === 'error' ? 'bg-red-100 text-red-700' : 'bg-emerald-100 text-emerald-700'}`}>
                                      {associatedData.qualityStatus}
                                    </span>
                                  ) : (
                                    <span className="text-slate-400">-</span>
                                  )}
                                </td>
                                <td className="px-4 py-3 text-slate-500">{associatedData?.usedByBehavior ?? '-'}</td>
                                <td className="px-4 py-3 text-slate-500">{parameter.description}</td>
                              </tr>
                            );
                          })}
                        </tbody>
                      </table>
                    )}

                    {bottomTab === 'sensing' && (
                      <div className="grid grid-cols-2 gap-3 p-4 min-w-[720px]">
                        {(sensingSections.length ? sensingSections : selectedBehaviorSections).map((section) => (
                          <section key={section.id} className="bg-white border border-slate-200 rounded-lg overflow-hidden">
                            <header className="px-3 py-2 bg-slate-50 border-b border-slate-100">
                              <h3 className="text-[11px] font-black uppercase tracking-widest text-slate-700">{section.title}</h3>
                              <p className="text-[10px] text-slate-400 mt-1 leading-relaxed">{section.description}</p>
                            </header>
                            <div className="p-3 space-y-2">
                              {section.items.map((item) => (
                                <div key={`${section.id}-${item.label}`} className="p-2 rounded-md border border-slate-100 bg-slate-50">
                                  <div className="text-[11px] font-black text-blue-700 font-mono">{item.label}</div>
                                  <div className="text-[10px] text-slate-500 mt-1">{item.source}</div>
                                  <div className="text-[10px] font-black text-slate-900 mt-1">{item.value}</div>
                                </div>
                              ))}
                            </div>
                          </section>
                        ))}
                      </div>
                    )}

                    {bottomTab === 'internalModels' && (
                      <div className="grid grid-cols-3 gap-3 p-4 min-w-[860px]">
                        {internalModelSections.map((section) => (
                          <section key={section.id} className="bg-white border border-slate-200 rounded-lg overflow-hidden">
                            <header className="px-3 py-2 bg-slate-50 border-b border-slate-100">
                              <h3 className="text-[11px] font-black uppercase tracking-widest text-slate-700">{section.title}</h3>
                              <p className="text-[10px] text-slate-400 mt-1 leading-relaxed">{section.description}</p>
                            </header>
                            <div className="p-3 space-y-2">
                              {section.items.map((item) => (
                                <div key={`${section.id}-${item.label}`} className="p-2 rounded-md border border-slate-100 bg-slate-50">
                                  <div className="text-[11px] font-black text-blue-700 font-mono">{item.label}</div>
                                  <div className="text-[10px] text-slate-500 mt-1">{item.source}</div>
                                  <div className="text-[10px] font-black text-slate-900 mt-1">{item.value}</div>
                                </div>
                              ))}
                            </div>
                          </section>
                        ))}
                      </div>
                    )}

                    {bottomTab === 'schedule' && (
                      <table className="min-w-[1280px] w-full text-left text-xs">
                        <thead className="sticky top-0 bg-white border-b border-slate-200 text-slate-400 uppercase tracking-widest">
                          <tr>
                            <th className="px-4 py-3">Schedule ID</th>
                            <th className="px-4 py-3">Step Order</th>
                            <th className="px-4 py-3">Phase</th>
                            <th className="px-4 py-3">Actor Agent</th>
                            <th className="px-4 py-3">Target Behavior</th>
                            <th className="px-4 py-3">Trigger</th>
                            <th className="px-4 py-3">Execution Mode</th>
                            <th className="px-4 py-3">Time Unit</th>
                            <th className="px-4 py-3">Condition</th>
                            <th className="px-4 py-3">Repeat Rule</th>
                            <th className="px-4 py-3">Depends On</th>
                            <th className="px-4 py-3">Writes To</th>
                            <th className="px-4 py-3">Notes</th>
                          </tr>
                        </thead>
                        <tbody className="divide-y divide-slate-100">
                          {scheduleRows.map((row) => (
                            <tr key={row.id} className="hover:bg-slate-50">
                              <td className="px-4 py-3 font-mono font-black text-blue-700">{row.id}</td>
                              <td className="px-4 py-3 font-black text-slate-900">{row.order}</td>
                              <td className="px-4 py-3 text-slate-500">{row.phase}</td>
                              <td className="px-4 py-3 text-slate-700 font-black">{row.actorAgent}</td>
                              <td className="px-4 py-3 font-mono text-blue-700 font-black">{row.targetBehavior}</td>
                              <td className="px-4 py-3 text-slate-500">{row.trigger}</td>
                              <td className="px-4 py-3 text-slate-500">{row.executionMode}</td>
                              <td className="px-4 py-3 text-slate-500">{row.timeUnit}</td>
                              <td className="px-4 py-3 text-slate-500">{row.condition}</td>
                              <td className="px-4 py-3 text-slate-500">{row.repeatRule}</td>
                              <td className="px-4 py-3 text-slate-500">{row.dependsOn}</td>
                              <td className="px-4 py-3 text-slate-500">{row.writesTo}</td>
                              <td className="px-4 py-3 text-slate-500">{row.notes}</td>
                            </tr>
                          ))}
                        </tbody>
                      </table>
                    )}

                    {bottomTab === 'data' && (
                      <table className="min-w-[1280px] w-full text-left text-xs">
                        <thead className="sticky top-0 bg-white border-b border-slate-200 text-slate-400 uppercase tracking-widest">
                          <tr>
                            <th className="px-4 py-3">Data ID</th>
                            <th className="px-4 py-3">Data</th>
                            <th className="px-4 py-3">Type</th>
                            <th className="px-4 py-3">Source Type</th>
                            <th className="px-4 py-3">Source Name</th>
                            <th className="px-4 py-3">Source Table</th>
                            <th className="px-4 py-3">Source Column</th>
                            <th className="px-4 py-3">Owner Agent</th>
                            <th className="px-4 py-3">Related Variable</th>
                            <th className="px-4 py-3">Used By Behavior</th>
                            <th className="px-4 py-3">Update Frequency</th>
                            <th className="px-4 py-3">Version Key</th>
                            <th className="px-4 py-3">Status</th>
                          </tr>
                        </thead>
                        <tbody className="divide-y divide-slate-100">
                          {associatedDataRows.map((row) => (
                            <tr key={row.id} className={row.qualityStatus === 'error' ? 'bg-red-50/40' : 'hover:bg-slate-50'}>
                              <td className="px-4 py-3 font-mono font-black text-slate-700">{row.id}</td>
                              <td className="px-4 py-3 font-mono font-black text-blue-700">{row.name}</td>
                              <td className="px-4 py-3 text-slate-500">{row.type}</td>
                              <td className="px-4 py-3 text-slate-500">{row.sourceType}</td>
                              <td className="px-4 py-3 text-slate-500">{row.sourceName}</td>
                              <td className="px-4 py-3 text-slate-500">{row.sourceTable}</td>
                              <td className="px-4 py-3 text-slate-500">{row.sourceColumn}</td>
                              <td className="px-4 py-3 text-slate-700 font-black">{row.ownerAgent}</td>
                              <td className="px-4 py-3 text-slate-500">{row.relatedVariable}</td>
                              <td className="px-4 py-3 text-slate-500">{row.usedByBehavior}</td>
                              <td className="px-4 py-3 text-slate-500">{row.updateFrequency}</td>
                              <td className="px-4 py-3 text-slate-500">{row.versionKey}</td>
                              <td className="px-4 py-3">
                                <span className={`px-2 py-1 rounded-full text-[10px] font-black uppercase ${row.qualityStatus === 'error' ? 'bg-red-100 text-red-700' : 'bg-emerald-100 text-emerald-700'}`}>
                                  {row.qualityStatus}
                                </span>
                              </td>
                            </tr>
                          ))}
                        </tbody>
                      </table>
                    )}

                    {bottomTab === 'io' && (
                      <div className="min-w-[1440px]">
                        <div className="sticky top-0 z-10 flex items-center justify-between gap-4 border-b border-slate-200 bg-white px-4 py-3">
                          <div>
                            <div className="text-[10px] font-black uppercase tracking-[0.2em] text-blue-600">Full Model I/O Contract</div>
                            <p className="mt-1 text-[11px] text-slate-500">
                              Showing {ioRows.length} total rows. {contextContracts.length} rows relate to {ioContextLabel}.
                            </p>
                          </div>
                          <span className="rounded-full border border-blue-100 bg-blue-50 px-3 py-1 text-[10px] font-black uppercase text-blue-700">
                            Context Highlight
                          </span>
                        </div>
                        <table className="w-full text-left text-xs">
                          <thead className="bg-white border-b border-slate-200 text-slate-400 uppercase tracking-widest">
                          <tr>
                            <th className="px-4 py-3">I/O ID</th>
                            <th className="px-4 py-3">Component Type</th>
                            <th className="px-4 py-3">Component ID</th>
                            <th className="px-4 py-3">Component</th>
                            <th className="px-4 py-3">Direction</th>
                            <th className="px-4 py-3">Name</th>
                            <th className="px-4 py-3">Type</th>
                            <th className="px-4 py-3">Schema</th>
                            <th className="px-4 py-3">Source Component</th>
                            <th className="px-4 py-3">Source Table</th>
                            <th className="px-4 py-3">Target Component</th>
                            <th className="px-4 py-3">Target Table</th>
                            <th className="px-4 py-3">Required</th>
                            <th className="px-4 py-3">Default</th>
                            <th className="px-4 py-3">Snapshot Policy</th>
                          </tr>
                        </thead>
                        <tbody className="divide-y divide-slate-100">
                          {ioRows.map((row) => {
                            const isContextRow = contextContractIds.has(row.id);
                            return (
                            <tr key={row.id} className={isContextRow ? 'bg-blue-50/70 ring-1 ring-inset ring-blue-100' : 'hover:bg-slate-50'}>
                              <td className={`px-4 py-3 font-mono font-black ${isContextRow ? 'text-blue-700' : 'text-slate-700'}`}>{row.id}</td>
                              <td className="px-4 py-3 text-slate-500">{row.componentType}</td>
                              <td className="px-4 py-3 font-mono text-slate-500">{row.componentId}</td>
                              <td className="px-4 py-3 text-slate-700 font-black">{row.componentName}</td>
                              <td className="px-4 py-3 text-slate-500">{row.direction}</td>
                              <td className="px-4 py-3 font-mono font-black text-blue-700">{row.ioName}</td>
                              <td className="px-4 py-3 text-slate-500">{row.ioDataType}</td>
                              <td className="px-4 py-3 font-mono text-slate-500">{row.schema}</td>
                              <td className="px-4 py-3 text-slate-500">{row.sourceComponent}</td>
                              <td className="px-4 py-3 text-slate-500">{row.sourceTable}</td>
                              <td className="px-4 py-3 text-slate-500">{row.targetComponent}</td>
                              <td className="px-4 py-3 text-slate-500">{row.targetTable}</td>
                              <td className="px-4 py-3 text-slate-900 font-black">{row.required}</td>
                              <td className="px-4 py-3 text-slate-500">{row.defaultValue}</td>
                              <td className="px-4 py-3 text-slate-500">{row.snapshotPolicy}</td>
                            </tr>
                            );
                          })}
                        </tbody>
                      </table>
                      </div>
                    )}

                    {bottomTab === 'validation' && (
                      <div className="min-w-[1440px]">
                        <div className="sticky top-0 z-10 flex items-center justify-between gap-4 border-b border-slate-200 bg-white px-4 py-3">
                          <div>
                            <div className="text-[10px] font-black uppercase tracking-[0.2em] text-red-600">Validation Checklist</div>
                            <p className="mt-1 text-[11px] text-slate-500">
                              Showing {validationRows.length} total checks. {selectedNodeValidations.length} checks relate to {selectedNode.title}.
                            </p>
                          </div>
                          <span className="rounded-full border border-red-100 bg-red-50 px-3 py-1 text-[10px] font-black uppercase text-red-700">
                            Context Highlight
                          </span>
                        </div>
                        <table className="w-full text-left text-xs">
                        <thead className="bg-white border-b border-slate-200 text-slate-400 uppercase tracking-widest">
                          <tr>
                            <th className="px-4 py-3">Validation ID</th>
                            <th className="px-4 py-3">Target Type</th>
                            <th className="px-4 py-3">Target ID</th>
                            <th className="px-4 py-3">Target</th>
                            <th className="px-4 py-3">Validation Type</th>
                            <th className="px-4 py-3">Method</th>
                            <th className="px-4 py-3">Metric</th>
                            <th className="px-4 py-3">Baseline Data</th>
                            <th className="px-4 py-3">Threshold</th>
                            <th className="px-4 py-3">Frequency</th>
                            <th className="px-4 py-3">Result Field</th>
                            <th className="px-4 py-3">Severity</th>
                            <th className="px-4 py-3">Status</th>
                            <th className="px-4 py-3">Notes</th>
                          </tr>
                        </thead>
                        <tbody className="divide-y divide-slate-100">
                          {validationRows.map((row) => {
                            const isNodeValidation = selectedNodeValidationIds.has(row.id);
                            const rowTone = row.status === 'error' ? 'bg-red-50/40' : row.status === 'warning' ? 'bg-amber-50/40' : 'hover:bg-slate-50';
                            return (
                            <tr key={row.id} className={isNodeValidation ? 'bg-blue-50/70 ring-1 ring-inset ring-blue-100' : rowTone}>
                              <td className={`px-4 py-3 font-mono font-black ${isNodeValidation ? 'text-blue-700' : 'text-slate-700'}`}>{row.id}</td>
                              <td className="px-4 py-3 text-slate-500">{row.targetType}</td>
                              <td className="px-4 py-3 font-mono text-slate-500">{row.targetId}</td>
                              <td className="px-4 py-3 font-mono font-black text-blue-700">{row.targetName}</td>
                              <td className="px-4 py-3 text-slate-500">{row.validationType}</td>
                              <td className="px-4 py-3 text-slate-500">{row.method}</td>
                              <td className="px-4 py-3 text-slate-500">{row.metric}</td>
                              <td className="px-4 py-3 text-slate-500">{row.baselineData}</td>
                              <td className="px-4 py-3 text-slate-900 font-black">{row.threshold}</td>
                              <td className="px-4 py-3 text-slate-500">{row.frequency}</td>
                              <td className="px-4 py-3 text-slate-500">{row.resultField}</td>
                              <td className="px-4 py-3 text-slate-500">{row.severity}</td>
                              <td className="px-4 py-3">
                                <span className={`px-2 py-1 rounded-full text-[10px] font-black uppercase ${
                                  row.status === 'error'
                                    ? 'bg-red-100 text-red-700'
                                    : row.status === 'warning'
                                      ? 'bg-amber-100 text-amber-700'
                                      : 'bg-emerald-100 text-emerald-700'
                                }`}>
                                  {row.status}
                                </span>
                              </td>
                              <td className="px-4 py-3 text-slate-500">{row.notes}</td>
                            </tr>
                            );
                          })}
                        </tbody>
                      </table>
                      </div>
                    )}
                  </div>
                </section>
                </>
                )}
              </div>
            </aside>
          </section>

          <section className="hidden">
            <div
              className="h-11 bg-slate-50 border-b border-slate-200 flex items-center justify-between px-4 cursor-pointer"
              onClick={() => setIsDetailOpen((open) => !open)}
            >
              <div className="flex items-center gap-2">
                <button
                  onClick={(event) => {
                    event.stopPropagation();
                    setIsDetailOpen((open) => !open);
                  }}
                  className="p-1.5 rounded-md border border-slate-200 bg-white text-slate-400 hover:text-blue-600 hover:border-blue-200 transition-colors"
                  title={isDetailOpen ? 'Collapse model table' : 'Expand model table'}
                >
                  {isDetailOpen ? <PanelLeftClose className="w-4 h-4 -rotate-90" /> : <PanelLeftOpen className="w-4 h-4 rotate-90" />}
                </button>
                {[
                  ['agents', Bot, 'Agents'],
                  ['variables', Table2, 'Variables'],
                  ['sensing', Eye, 'Sensing'],
                  ['internalModels', Workflow, 'Internal Models'],
                  ['schedule', Terminal, 'Schedule'],
                  ['data', Database, 'Data'],
                  ['io', Layers3, 'I/O'],
                  ['validation', CheckCircle, 'Validation'],
                ].map(([id, Icon, label]) => (
                  <button
                    key={id as string}
                    onClick={(event) => {
                      event.stopPropagation();
                      setBottomTab(id as typeof bottomTab);
                      setIsDetailOpen(true);
                    }}
                    className={`flex items-center gap-2 px-3 py-1.5 rounded-md text-[10px] font-black uppercase tracking-wider ${
                      bottomTab === id ? 'bg-white text-blue-600 border border-slate-200 shadow-sm' : 'text-slate-400 hover:text-slate-700'
                    }`}
                  >
                    <Icon className="w-3.5 h-3.5" /> {label as string}
                  </button>
                ))}
              </div>
              <span className="text-[10px] font-black text-slate-400 uppercase tracking-widest">
                {isDetailOpen ? 'Click header to collapse' : 'Click to expand model table'} · {selectedNode.title}
              </span>
            </div>

            {isDetailOpen && <div className="flex-1 overflow-auto">
              {bottomTab === 'agents' && (
                <table className="w-full text-left text-xs">
                  <thead className="sticky top-0 bg-white border-b border-slate-200 text-slate-400 uppercase tracking-widest">
                    <tr>
                      <th className="px-4 py-3">Agent / Subject</th>
                      <th className="px-4 py-3">Kind</th>
                      <th className="px-4 py-3">Status</th>
                      <th className="px-4 py-3">Inputs</th>
                      <th className="px-4 py-3">Outputs</th>
                      <th className="px-4 py-3">Description</th>
                    </tr>
                  </thead>
                  <tbody className="divide-y divide-slate-100">
                    {workflow.nodes.map((node) => {
                      const nodeStatus = getNodeStatusFromValidation(workflow, node.id);
                      return (
                      <tr key={node.id} className={selectedNode.id === node.id ? 'bg-blue-50/50' : 'hover:bg-slate-50'}>
                        <td className="px-4 py-3 font-black text-slate-900">{node.title}</td>
                        <td className="px-4 py-3 text-slate-500">{kindStyles[node.kind].label}</td>
                        <td className="px-4 py-3">
                          <span className={`px-2 py-1 rounded-full text-[10px] font-black uppercase ${
                            nodeStatus === 'error'
                              ? 'bg-red-100 text-red-700'
                              : nodeStatus === 'warning'
                                ? 'bg-amber-100 text-amber-700'
                                : 'bg-emerald-100 text-emerald-700'
                          }`}>
                            {nodeStatus}
                          </span>
                        </td>
                        <td className="px-4 py-3 text-slate-500">{node.inputs.map((port) => port.type).join(', ') || 'NONE'}</td>
                        <td className="px-4 py-3 text-slate-500">{node.outputs.map((port) => port.type).join(', ') || 'NONE'}</td>
                        <td className="px-4 py-3 text-slate-500">{node.subtitle}</td>
                      </tr>
                      );
                    })}
                  </tbody>
                </table>
              )}

              {bottomTab === 'variables' && (
                <table className="min-w-[1180px] w-full text-left text-xs">
                  <thead className="sticky top-0 bg-white border-b border-slate-200 text-slate-400 uppercase tracking-widest">
                    <tr>
                      <th className="px-4 py-3">Variable</th>
                      <th className="px-4 py-3">Type</th>
                      <th className="px-4 py-3">Scope</th>
                      <th className="px-4 py-3">Source</th>
                      <th className="px-4 py-3">Value</th>
                      <th className="px-4 py-3">Status</th>
                      <th className="px-4 py-3">Associated Data</th>
                      <th className="px-4 py-3">Version Key</th>
                      <th className="px-4 py-3">Quality</th>
                      <th className="px-4 py-3">Used By Behavior</th>
                      <th className="px-4 py-3">Description</th>
                    </tr>
                  </thead>
                  <tbody className="divide-y divide-slate-100">
                    {(selectedParameters.length ? selectedParameters : workflow.parameters).map((parameter) => {
                      const associatedData = getAssociatedDataForVariable(parameter.name);
                      return (
                        <tr
                          key={parameter.id}
                          onClick={() => setSelectedVariableName(parameter.name)}
                          className={`cursor-pointer ${
                            selectedVariableName === parameter.name
                              ? 'bg-blue-50'
                              : parameter.status === 'error' || associatedData?.qualityStatus === 'error'
                                ? 'bg-red-50/40'
                                : 'hover:bg-slate-50'
                          }`}
                        >
                          <td className="px-4 py-3 font-mono font-black text-blue-700">{parameter.name}</td>
                          <td className="px-4 py-3 text-slate-600">{parameter.type}</td>
                          <td className="px-4 py-3 text-slate-500">{parameter.scope}</td>
                          <td className="px-4 py-3 text-slate-500">{parameter.source}</td>
                          <td className={`px-4 py-3 font-black ${parameter.status === 'error' ? 'text-red-600' : 'text-slate-900'}`}>{parameter.value}</td>
                          <td className="px-4 py-3">
                            <span
                              className={`px-2 py-1 rounded-full text-[10px] font-black uppercase ${
                                parameter.status === 'error'
                                  ? 'bg-red-100 text-red-700'
                                  : parameter.status === 'warning'
                                    ? 'bg-amber-100 text-amber-700'
                                    : 'bg-emerald-100 text-emerald-700'
                              }`}
                            >
                              {parameter.status}
                            </span>
                          </td>
                          <td className="px-4 py-3 font-mono text-slate-600">{associatedData?.id ?? '-'}</td>
                          <td className="px-4 py-3 text-slate-500">{associatedData?.versionKey ?? '-'}</td>
                          <td className="px-4 py-3">
                            {associatedData ? (
                              <span className={`px-2 py-1 rounded-full text-[10px] font-black uppercase ${associatedData.qualityStatus === 'error' ? 'bg-red-100 text-red-700' : 'bg-emerald-100 text-emerald-700'}`}>
                                {associatedData.qualityStatus}
                              </span>
                            ) : (
                              <span className="text-slate-400">-</span>
                            )}
                          </td>
                          <td className="px-4 py-3 text-slate-500">{associatedData?.usedByBehavior ?? '-'}</td>
                          <td className="px-4 py-3 text-slate-500">{parameter.description}</td>
                        </tr>
                      );
                    })}
                  </tbody>
                </table>
              )}

              {bottomTab === 'sensing' && (
                <div className="grid grid-cols-2 gap-3 p-4 min-w-[720px]">
                  {(sensingSections.length ? sensingSections : selectedBehaviorSections).map((section) => (
                    <section key={section.id} className="bg-white border border-slate-200 rounded-lg overflow-hidden">
                      <header className="px-3 py-2 bg-slate-50 border-b border-slate-100">
                        <h3 className="text-[11px] font-black uppercase tracking-widest text-slate-700">{section.title}</h3>
                        <p className="text-[10px] text-slate-400 mt-1 leading-relaxed">{section.description}</p>
                      </header>
                      <div className="p-3 space-y-2">
                        {section.items.map((item) => (
                          <div key={`${section.id}-${item.label}`} className="p-2 rounded-md border border-slate-100 bg-slate-50">
                            <div className="text-[11px] font-black text-blue-700 font-mono">{item.label}</div>
                            <div className="text-[10px] text-slate-500 mt-1">{item.source}</div>
                            <div className="text-[10px] font-black text-slate-900 mt-1">{item.value}</div>
                          </div>
                        ))}
                      </div>
                    </section>
                  ))}
                </div>
              )}

              {bottomTab === 'internalModels' && (
                <div className="grid grid-cols-3 gap-3 p-4 min-w-[860px]">
                  {internalModelSections.map((section) => (
                    <section key={section.id} className="bg-white border border-slate-200 rounded-lg overflow-hidden">
                      <header className="px-3 py-2 bg-slate-50 border-b border-slate-100">
                        <h3 className="text-[11px] font-black uppercase tracking-widest text-slate-700">{section.title}</h3>
                        <p className="text-[10px] text-slate-400 mt-1 leading-relaxed">{section.description}</p>
                      </header>
                      <div className="p-3 space-y-2">
                        {section.items.map((item) => (
                          <div key={`${section.id}-${item.label}`} className="p-2 rounded-md border border-slate-100 bg-slate-50">
                            <div className="text-[11px] font-black text-blue-700 font-mono">{item.label}</div>
                            <div className="text-[10px] text-slate-500 mt-1">{item.source}</div>
                            <div className="text-[10px] font-black text-slate-900 mt-1">{item.value}</div>
                          </div>
                        ))}
                      </div>
                    </section>
                  ))}
                </div>
              )}

              {bottomTab === 'schedule' && (
                <table className="w-full text-left text-xs">
                  <thead className="sticky top-0 bg-white border-b border-slate-200 text-slate-400 uppercase tracking-widest">
                    <tr>
                      <th className="px-4 py-3">Step</th>
                      <th className="px-4 py-3">Phase</th>
                      <th className="px-4 py-3">Actor</th>
                      <th className="px-4 py-3">Behavior</th>
                      <th className="px-4 py-3">Trigger</th>
                      <th className="px-4 py-3">Mode</th>
                      <th className="px-4 py-3">Writes To</th>
                    </tr>
                  </thead>
                  <tbody className="divide-y divide-slate-100">
                    {scheduleRows.map((row) => (
                      <tr key={`${row.order}-${row.targetBehavior}`} className="hover:bg-slate-50">
                        <td className="px-4 py-3 font-black text-slate-900">{row.order}</td>
                        <td className="px-4 py-3 text-slate-500">{row.phase}</td>
                        <td className="px-4 py-3 text-slate-700 font-black">{row.actorAgent}</td>
                        <td className="px-4 py-3 font-mono text-blue-700 font-black">{row.targetBehavior}</td>
                        <td className="px-4 py-3 text-slate-500">{row.trigger}</td>
                        <td className="px-4 py-3 text-slate-500">{row.executionMode}</td>
                        <td className="px-4 py-3 text-slate-500">{row.writesTo}</td>
                      </tr>
                    ))}
                  </tbody>
                </table>
              )}

              {bottomTab === 'data' && (
                <table className="min-w-[1280px] w-full text-left text-xs">
                  <thead className="sticky top-0 bg-white border-b border-slate-200 text-slate-400 uppercase tracking-widest">
                    <tr>
                      <th className="px-4 py-3">Data ID</th>
                      <th className="px-4 py-3">Data</th>
                      <th className="px-4 py-3">Type</th>
                      <th className="px-4 py-3">Source Type</th>
                      <th className="px-4 py-3">Source Name</th>
                      <th className="px-4 py-3">Source Table</th>
                      <th className="px-4 py-3">Source Column</th>
                      <th className="px-4 py-3">Owner Agent</th>
                      <th className="px-4 py-3">Related Variable</th>
                      <th className="px-4 py-3">Used By Behavior</th>
                      <th className="px-4 py-3">Update Frequency</th>
                      <th className="px-4 py-3">Version Key</th>
                      <th className="px-4 py-3">Status</th>
                    </tr>
                  </thead>
                  <tbody className="divide-y divide-slate-100">
                    {associatedDataRows.map((row) => (
                      <tr key={row.id} className={row.qualityStatus === 'error' ? 'bg-red-50/40' : 'hover:bg-slate-50'}>
                        <td className="px-4 py-3 font-mono font-black text-slate-700">{row.id}</td>
                        <td className="px-4 py-3 font-mono font-black text-blue-700">{row.name}</td>
                        <td className="px-4 py-3 text-slate-500">{row.type}</td>
                        <td className="px-4 py-3 text-slate-500">{row.sourceType}</td>
                        <td className="px-4 py-3 text-slate-500">{row.sourceName}</td>
                        <td className="px-4 py-3 text-slate-500">{row.sourceTable}</td>
                        <td className="px-4 py-3 text-slate-500">{row.sourceColumn}</td>
                        <td className="px-4 py-3 text-slate-700 font-black">{row.ownerAgent}</td>
                        <td className="px-4 py-3 text-slate-500">{row.relatedVariable}</td>
                        <td className="px-4 py-3 text-slate-500">{row.usedByBehavior}</td>
                        <td className="px-4 py-3 text-slate-500">{row.updateFrequency}</td>
                        <td className="px-4 py-3 text-slate-500">{row.versionKey}</td>
                        <td className="px-4 py-3">
                          <span className={`px-2 py-1 rounded-full text-[10px] font-black uppercase ${row.qualityStatus === 'error' ? 'bg-red-100 text-red-700' : 'bg-emerald-100 text-emerald-700'}`}>
                            {row.qualityStatus}
                          </span>
                        </td>
                      </tr>
                    ))}
                  </tbody>
                </table>
              )}

              {bottomTab === 'io' && (
                <table className="min-w-[1440px] w-full text-left text-xs">
                  <thead className="sticky top-0 bg-white border-b border-slate-200 text-slate-400 uppercase tracking-widest">
                    <tr>
                      <th className="px-4 py-3">I/O ID</th>
                      <th className="px-4 py-3">Component Type</th>
                      <th className="px-4 py-3">Component ID</th>
                      <th className="px-4 py-3">Component</th>
                      <th className="px-4 py-3">Direction</th>
                      <th className="px-4 py-3">Name</th>
                      <th className="px-4 py-3">Type</th>
                      <th className="px-4 py-3">Schema</th>
                      <th className="px-4 py-3">Source Component</th>
                      <th className="px-4 py-3">Source Table</th>
                      <th className="px-4 py-3">Target Component</th>
                      <th className="px-4 py-3">Target Table</th>
                      <th className="px-4 py-3">Required</th>
                      <th className="px-4 py-3">Default</th>
                      <th className="px-4 py-3">Snapshot Policy</th>
                    </tr>
                  </thead>
                  <tbody className="divide-y divide-slate-100">
                    {ioRows.map((row) => (
                      <tr key={row.id} className="hover:bg-slate-50">
                        <td className="px-4 py-3 font-mono font-black text-slate-700">{row.id}</td>
                        <td className="px-4 py-3 text-slate-500">{row.componentType}</td>
                        <td className="px-4 py-3 font-mono text-slate-500">{row.componentId}</td>
                        <td className="px-4 py-3 text-slate-700 font-black">{row.componentName}</td>
                        <td className="px-4 py-3 text-slate-500">{row.direction}</td>
                        <td className="px-4 py-3 font-mono font-black text-blue-700">{row.ioName}</td>
                        <td className="px-4 py-3 text-slate-500">{row.ioDataType}</td>
                        <td className="px-4 py-3 font-mono text-slate-500">{row.schema}</td>
                        <td className="px-4 py-3 text-slate-500">{row.sourceComponent}</td>
                        <td className="px-4 py-3 text-slate-500">{row.sourceTable}</td>
                        <td className="px-4 py-3 text-slate-500">{row.targetComponent}</td>
                        <td className="px-4 py-3 text-slate-500">{row.targetTable}</td>
                        <td className="px-4 py-3 text-slate-900 font-black">{row.required}</td>
                        <td className="px-4 py-3 text-slate-500">{row.defaultValue}</td>
                        <td className="px-4 py-3 text-slate-500">{row.snapshotPolicy}</td>
                      </tr>
                    ))}
                  </tbody>
                </table>
              )}

              {bottomTab === 'validation' && (
                <table className="min-w-[1440px] w-full text-left text-xs">
                  <thead className="sticky top-0 bg-white border-b border-slate-200 text-slate-400 uppercase tracking-widest">
                    <tr>
                      <th className="px-4 py-3">Validation ID</th>
                      <th className="px-4 py-3">Target Type</th>
                      <th className="px-4 py-3">Target ID</th>
                      <th className="px-4 py-3">Target</th>
                      <th className="px-4 py-3">Validation Type</th>
                      <th className="px-4 py-3">Method</th>
                      <th className="px-4 py-3">Metric</th>
                      <th className="px-4 py-3">Baseline Data</th>
                      <th className="px-4 py-3">Threshold</th>
                      <th className="px-4 py-3">Frequency</th>
                      <th className="px-4 py-3">Result Field</th>
                      <th className="px-4 py-3">Severity</th>
                      <th className="px-4 py-3">Status</th>
                      <th className="px-4 py-3">Notes</th>
                    </tr>
                  </thead>
                  <tbody className="divide-y divide-slate-100">
                    {validationRows.map((row) => (
                      <tr key={row.id} className={row.status === 'error' ? 'bg-red-50/40' : 'hover:bg-slate-50'}>
                        <td className="px-4 py-3 font-mono font-black text-slate-700">{row.id}</td>
                        <td className="px-4 py-3 text-slate-500">{row.targetType}</td>
                        <td className="px-4 py-3 font-mono text-slate-500">{row.targetId}</td>
                        <td className="px-4 py-3 font-mono font-black text-blue-700">{row.targetName}</td>
                        <td className="px-4 py-3 text-slate-500">{row.validationType}</td>
                        <td className="px-4 py-3 text-slate-500">{row.method}</td>
                        <td className="px-4 py-3 text-slate-500">{row.metric}</td>
                        <td className="px-4 py-3 text-slate-500">{row.baselineData}</td>
                        <td className="px-4 py-3 text-slate-900 font-black">{row.threshold}</td>
                        <td className="px-4 py-3 text-slate-500">{row.frequency}</td>
                        <td className="px-4 py-3 text-slate-500">{row.resultField}</td>
                        <td className="px-4 py-3 text-slate-500">{row.severity}</td>
                        <td className="px-4 py-3">
                          <span className={`px-2 py-1 rounded-full text-[10px] font-black uppercase ${
                            row.status === 'error'
                              ? 'bg-red-100 text-red-700'
                              : row.status === 'warning'
                                ? 'bg-amber-100 text-amber-700'
                                : 'bg-emerald-100 text-emerald-700'
                          }`}>
                            {row.status}
                          </span>
                        </td>
                        <td className="px-4 py-3 text-slate-500">{row.notes}</td>
                      </tr>
                    ))}
                  </tbody>
                </table>
              )}
            </div>}
          </section>
        </main>
      </div>

      <footer className="h-6 bg-white border-t border-slate-200 px-4 flex items-center justify-between text-[10px] text-slate-400 relative z-50">
        <span className="flex items-center gap-1.5">
          <span className="w-2 h-2 bg-green-500 rounded-full animate-pulse" /> Workflow Stable
        </span>
        <div className="flex items-center gap-3">
          <span>OmniEditor Pipeline v3.0</span>
          <MessageSquare className="w-3 h-3" />
        </div>
      </footer>
    </div>
  );
};

export default OmniEditor;